feat(portfolio): metodi Cerbero v2 (get_historical_v2, get_instruments, get_ticker_batch)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/live/cerbero_client.py

@@ -49,6 +49,28 @@ class CerberoClient:
         })
         return data.get("candles", [])
 
+    def get_historical_v2(self, instrument: str, start_date: str, end_date: str,
+                          interval: str = "1h", exchange: str = "deribit") -> list[dict]:
+        """Endpoint unificato v2: /mcp/tools/get_historical (exchange deribit|hyperliquid).
+        Stesso shape candele del legacy: [{timestamp(ms), open, high, low, close, volume}]."""
+        data = self._post("/mcp/tools/get_historical", {
+            "exchange": exchange, "instrument": instrument,
+            "interval": interval, "start_date": start_date, "end_date": end_date,
+        })
+        return data.get("candles", [])
+
+    def get_instruments(self, currency: str, kind: str = "future",
+                        exchange: str = "deribit", limit: int = 100) -> list[dict]:
+        """Enumera gli strumenti reali (v2). Usato per risolvere il naming senza hardcoding."""
+        data = self._post("/mcp/tools/get_instruments", {
+            "exchange": exchange, "currency": currency, "kind": kind, "limit": limit,
+        })
+        return data.get("instruments", data if isinstance(data, list) else [])
+
+    def get_ticker_batch(self, instruments: list[str]) -> dict:
+        """Prezzi correnti di N strumenti in una sola chiamata (v2, Deribit)."""
+        return self._post("/mcp-deribit/tools/get_ticker_batch", {"instruments": instruments})
+
     # --- Account ---
 
     def get_account_summary(self, currency: str = "USDC") -> dict: